Finding the Fourth Proportional to 12,974.56, 17,906.24 and 7,385.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,974.56 : 17,906.24 = 7,385.92 : x
2. Step 2: Convert to fraction form
   12,974.56/17,906.24 = 7,385.92/x
3. Step 3: Cross multiply
   12,974.56x = 17,906.24 × 7,385.92
4. Step 4: Simplify right side
   12,974.56x = 132,254,056.14
5. Step 5: Solve for x
   x = 132,254,056.14/12,974.56
6. Step 6: Final answer
   x = 10,193.34